穹顶之下
4.0 |2025年02月24日 |已完结
简介:

      2013年,中央电视台前资深记者柴静外出采访期间得知自己怀孕的消息。然而作为母亲的喜悦很快被女儿良性肿瘤的诊断结果所冲淡,虽然小天使的手术顺利完成,但她似乎开始为无时不在的雾霾污染担忧起来。紧闭的门窗无法锁住孩子渴望在蓝天白云下奔跑的悸动之心,无奈隐形的杀手时时刻刻都在 摧残人们的健康乃至生命。“我不是多怕死,我只是不想那么活。”抱持着这样的想法,柴静对雾霾的成因、组成以及引发的严重后果展开调查。我们才知道,原来2004年被人们当作雾的东西就已经是霾了。原来主要组成物质苯并a芘竟超标14倍之多。原来60%的雾霾污染物来自燃煤、燃油及其复合体。原来国家法律法规中竟有着如此多的漏洞。原来金钱利益的驱使下人类可以如此肆无忌惮拿着自身乃至子孙的性命开玩笑。
 穹顶之下,你我无法逃离,却也并非没有办法……

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巨无霸机械工程
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巨无霸机械工程
9.0
更新时间:2024年02月06日
主演:Garnett Williams
简介:

  Massive machines require engineering extremes.
  The massive man-made satellite, commonly known as the International Space Station, hurtling around the Earth at 27,600 km an hour, has been a temporary home for humans for the last 20 years. The biggest land vehicle on earth, a bucket excavator titled Bagger 293, that can move 240,000 cubic meters of dirt each day. Innovation has always meant building bigger, faster, taller, longer and stronger than anything that came before. We’ve seen them in dramatic visual fashion. But how do these actually work? What sets each machine apart. What big ideas drove its evolution and what limitations did this machine overcome? What forces was it built to withstand and where is the breaking point? Using CGI and expert insights, we ‘strip down’ the design of some of the world’s unique colossal machines and reveal mechanical secrets that not only made them work, but also changed the world in a big way!
  Each episode explores four incredible machines, linked thematically. From sea and space faring designs, to mega airborne, mining and industrial machines, we’ll break down what they can do as well as key inner mechanics and materials that make it all possible. Dynamic archival footage featuring; slow motion, aerials, and time-lapses get us past the ‘caution’ tape and up close and personal with these compound monsters. CGI provides breakouts and blueprints and a look at hidden mechanisms. Adding expertise of structural, mechanical, chemical and forensic engineers to help reveal what’s at stake when these colossal constructions are put work, and how all the pieces come together to make a big impact.
  EPISODES:
  S1 E1 Sea Monsters
  S1 E2 Astronomical Engineering
  S1 E3 There Be Dragons
  S1 E4 Sub-Zero Supermachines
  S1 E5 Earth Biters
  S1 E6 Mammoth Manufacturing
  

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2021
巨无霸机械工程
主演:Garnett Williams
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